In the McBSP User's Guide for Keystone Devices (spruhh0), Section 2.12.2.1 states
GPIO pin multiplexed with the McBSP FSX signal. Note that on the device, the GPIO pins (of the GPIO peripheral) are multiplexed with the McBSP pins. Software can program the device's pin multiplexing register (PINMUX) to default these pins to the GPIO function, and only switch them to the McBSP 2.12 McBSP Initialization Procedure SPRUHH0—May 2012 KeyStone Architecture Multichannel Buffered Serial Port (McBSP) User Guide 2-51 Submit Documentation Feedback www.ti.com Chapter 2—Architecture function upon detecting the first frame sync. This method is only recommended if the external device is both the frame sync and clock master; that is, the external device drives both the FSX and CLKX signals. This method is not recommended if the McBSP is the clock master (driving CLKX and/or CLKR), as the “on-the-fly” pin multiplexed switching can cause a glitch on the CLKX/CLKR pin. For more details on pin multiplexing, see the device-specific data manual.
However, in the TMS320C6655 Datasheet, there is no mention of PINMUX. The PIN_CONTROL_0 and PIN_CONTROL_1 Registers do not mention McBsp.
Where is this information located?
How can I mux the McBSP1 pins as GPIO on my device?
Thank you.
